Well, you also have the second option “Import Groups as Separate Meshes”. If that also don’t give you the result you’re looking for, I’m afraid you’re out of luck then.

How much groups you get after the import depends on how this object was created, I think.
But normally you have to cleanup the model anyway, so moving some mesh objects into a single group beforehand shouldn’t be that time consuming (you can use the filter) comparing to the overall cleanup.